package org.apache.maven.artifact.repository.metadata;

/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *  http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

import org.apache.maven.artifact.Artifact;
import org.apache.maven.artifact.ArtifactUtils;
import org.apache.maven.artifact.repository.ArtifactRepository;
import org.apache.maven.artifact.versioning.ArtifactVersion;
import org.apache.maven.artifact.versioning.Restriction;
import org.apache.maven.artifact.versioning.VersionRange;

/**
 * Metadata for the artifact directory of the repository.
 *
 * @author <a href="mailto:brett@apache.org">Brett Porter</a>
 */
public class ArtifactRepositoryMetadata extends AbstractRepositoryMetadata {
  private Artifact artifact;

  public ArtifactRepositoryMetadata(Artifact artifact) {
    this(artifact, null);
  }

  public ArtifactRepositoryMetadata(Artifact artifact, Versioning versioning) {
    super(createMetadata(artifact, versioning));
    this.artifact = artifact;
  }

  public boolean storedInGroupDirectory() {
    return false;
  }

  public boolean storedInArtifactVersionDirectory() {
    return false;
  }

  public String getGroupId() {
    return artifact.getGroupId();
  }

  public String getArtifactId() {
    return artifact.getArtifactId();
  }

  public String getBaseVersion() {
    // Don't want the artifact's version in here, as this is stored in the directory above that
    return null;
  }

  public Object getKey() {
    return "artifact " + artifact.getGroupId() + ":" + artifact.getArtifactId();
  }

  public boolean isSnapshot() {
    // Don't consider the artifact's version in here, as this is stored in the directory above that
    return false;
  }

  public int getNature() {
    if (artifact.getVersion() != null) {
      return artifact.isSnapshot() ? SNAPSHOT : RELEASE;
    }

    VersionRange range = artifact.getVersionRange();
    if (range != null) {
      for (Restriction restriction : range.getRestrictions()) {
        if (isSnapshot(restriction.getLowerBound()) || isSnapshot(restriction.getUpperBound())) {
          return RELEASE_OR_SNAPSHOT;
        }
      }
    }

    return RELEASE;
  }

  private boolean isSnapshot(ArtifactVersion version) {
    return version != null && ArtifactUtils.isSnapshot(version.getQualifier());
  }

  public ArtifactRepository getRepository() {
    return null;
  }

  public void setRepository(ArtifactRepository remoteRepository) {
    /*
     * NOTE: Metadata at the g:a level contains a collection of available versions. After merging,
     * we can't tell which repository provides which version so the metadata manager must not
     * restrict the artifact resolution to the repository with the most recent updates.
     */
  }

}
